Electrostatic recording apparatus
US4607937A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 16, 1984 |
| Grant date | Aug 26, 1986 |
| Priority date | — |
| Expiry date | Nov 16, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/0291
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An electrostatic recording apparatus comprises a photosensitive drum, and this photosensitive drum includes a substrate composed of a conductive material and a photoconductive layer composed of amorphous silicon which is formed thereon. A resistor is connected between the conductive substrate and a reference potential. When a current flows through the photoconductive layer of the photosensitive drum, a bias voltage is produced by this resistor. The surface potential of the photoconductive layer is kept constant by the voltage of the photoconductive layer and the bias voltage, and accordingly, the voltage to be kept by the photoconductive layer itself can be small, and the amount of the current flowing into the photoconductive layer can be small. Preferably, a capacitor is connected in parallel with the resistor. This capacitor prevents the surface potential of the photoconductive layer from being affected by AC discharging of a separating corotron.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.